We also tested durability by dropping each iron twice at vanity level to see if it would break, chip, or scratch. We used a meat thermometer to test the maximum heat, a ruler to verify the cord lengths, and a stopwatch to time how long each iron took to heat up and shut off automatically. “It’s equally important to me that the flat iron works well with all hair types and offers versatility,” Stenson tells PEOPLE. Our testers took note of how smooth the glide felt, how many passes it took to get their hair straight, and how easy the iron was to use.Īlong with our in-depth testing, we also spoke to hair stylists, including Kelly and beauty expert Nick Stenson, who’s smoothed the hair of countless celebrities and created picture-perfect styles for numerous runway shows. We asked testers with different hair types (thin, fine, wavy, thick, and curly) to try some of the best-selling flat irons and record their insights throughout the process. That’s why PEOPLE conducted thorough research and testing to determine which flat irons are worth their weight in gold.

“ are also used to seal the cuticle, meaning no frizz and added shine,” Kevin Kelly, a celebrity hairstylist and extension expert who has worked with Nicky Hilton, tells PEOPLE. But with so many factors to take into account (hair type, plate material, plate size, and more) and a seemingly endless number of tools to choose from, finding the right flat iron for you can be a challenge. Flat irons are a multifunctional tool that can help you create silky smooth styles.

1/2 inch flat iron